Fluid pressure reversing valve

US9133728B2 · kind B2 · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Werner Buse · Kaarst, DE
• Rolf Lappan · Cologne, DE
• Rolf Dohrmann · Kaarst, DE
• Franz-Josef Schnelker · Neuss, DE
• Christoph Sadowski · Sprockhövel, DE

Key dates

• Filing date: May 27, 2011
• Grant date: Sep 15, 2015
• Expiry date: Mar 17, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K31/0693
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A fluid pressure reversing valve includes a housing, a coil carrier, a coil wound on the coil carrier, a bearing, an armature axially displaceable in the bearing, a core, a flux guiding device, a first connection bore, a control chamber, a first valve seat. A connection sleeve comprises a second connection bore, a first valve seat for a valve element of the armature, and a second valve seat for the valve element of the armature. The connection sleeve communicates with a fluid to be controlled. A third connection bore is connected with the control chamber. A valve element abuts against the first valve seat in a first position so as to form a connection between the first connection bore and the third connection bore, and against the second valve seat in a second position so as to form a connection between the third connection bore and the second connection bore.